The point of her speaking would be to promote conservatism.
Or, to put it simply: to promote conservatism.
Supposing that she were able to do that, of what use would that
be to the Romney convention? Wouldn't the Romney folks dislike
and disavow such promotion? So why would they want her to speak.
Look, the RomneyCorps is putting this together.
It's ate-up to be outraged that they didn't invite Palin.
Of course they didn't. Duh.
If for no other reason it drives the libs bonkers and pisses them off when she speaks! Gives them something to stew about for weeks.